Bonnethead Sharks: Heads Change With Age | Science News

New research flips the script on bonnethead sharks, revealing that both males and females start with pointed heads—and it’s age, not sex, that shapes their iconic shovel-like forms. Females undergo a far more dramatic transformation as they mature, while diet doesn’t appear to drive the difference. Scientists tracked over 100 sharks in Florida bays, using photos and muscle samples to uncover how head shape evolves with age. The reason behind this striking dimorphism remains a mystery—perhaps sharper heads help younger sharks swim better, but as females grow larger for reproduction, that advantage fades. Researchers are now diving deeper into swimming mechanics and embryonic development to solve this evolutionary puzzle, while also exploring how these methods can aid conservation efforts across bonnethead populations. Listen in comfort:Get a discount on a Soli Pillow: http://solipillow.com/discount/dnn. Advertise on DNN:[email protected] This is an automated, high-level news summary based on public reporting.Report issues to [email protected]. View sources & latest updates:https://sources.thednn.ai/d4a3760abb646135